1838718713093 has 2 divisors, whose sum is σ = 1838718713094. Its totient is φ = 1838718713092.

The previous prime is 1838718713089. The next prime is 1838718713099. The reversal of 1838718713093 is 3903178178381.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1831740282724 + 6978430369 = 1353418^2 + 83537^2 .

It is a cyclic number.

It is not a de Polignac number, because 1838718713093 - 2² = 1838718713089 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1838718713099) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 919359356546 + 919359356547.

It is an arithmetic number, because the mean of its divisors is an integer number (919359356547).

Almost surely, 2^{1838718713093} is an apocalyptic number.

It is an amenable number.

1838718713093 is a deficient number, since it is larger than the sum of its proper divisors (1).

1838718713093 is an equidigital number, since it uses as much as digits as its factorization.

1838718713093 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6096384, while the sum is 59.

The spelling of 1838718713093 in words is "one trillion, eight hundred thirty-eight billion, seven hundred eighteen million, seven hundred thirteen thousand, ninety-three".